Fluidmaster PRO Series Flappers are built to last made from high quality rubber and plastic compounds the PRO Flappers can stand up to the harshest water conditions. The included kink-free chain helps eliminate flapper hang up and running toilet problems. Here the PRO58 3" Adjustable Toilet Flapper features an adjustable dial for water savings, adjustable arms for fit, and a durable high quality silicone seal. Trust Fluidmaster PRO Series Flappers for proven quality, when replacing your 3" flush valve toilet flapper.